FILE - In this Tuesday, Feb. 21, 2012 file photo, a trader works on the floor at the New York Stock Exchange in New York. (AP Photo/Seth Wenig)

Associated Press
FILE - In this Tuesday, Feb. 21, 2012 file photo, a trader works on the floor at the New York Stock Exchange in New York. (AP Photo/Seth Wenig)
FILE - In this Tuesday, Feb. 21, 2012 file photo, a trader works on the floor at the New York Stock Exchange in New York. (AP Photo/Seth Wenig)
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